president obama sworn in for a second four years something 16 presidents before him have done. private ceremony in the blue room fulfilling the requirement that presidential terms begin on january 20th at noon. it kicked off a two day celebration that will bring hundreds of thousands of people back to the national mall for the president's inaugural address. we'll break down what we expect him to say. i'm eric shawn and welcome to a brand-new hour. >> i'm arthel nevil. a crowd up to 800,000 people expected to witnesses the public swearing in. his speech expected to layout his vision for the second term and where america needs to go. ed henry has more. ed, this time it went off without a hitch. i don't know when sasha was hugging him, you did it, you didn't mess up. >> reporter: it was funny because it was flawless. you remember what happened four years ago because chief justice roberts tried to memorize the oath. he wanted to make sure he got it right. he had his notes. it was rare because normally a president has events in bigger rooms like the east room, this is more intimate